seconv is Subtitle Edit’s headless command-line converter. It supports the same formats, operations, and OCR engines as the desktop app — without any GUI dependency — and is suitable for scripts, CI pipelines, and bulk conversion.
seconv *.srt webvtt
seconv movie.srt subrip --encoding:source --FixCommonErrors
seconv movie.mkv subrip --track-number:3
seconv movie.sup subrip --ocr-engine:tesseract --ocr-language:eng
seconv movie.sub subrip --ocr-engine:binaryocr --ocr-db:Latin.db # VobSub (.idx auto-detected)
seconv movie.sub subrip --ocr-engine:tesseract --no-vobsub-isolate-colors # OCR raw palette (isolation is on by default)
seconv movie.sup subrip --time-codes-only
seconv movie.srt bluraysup --resolution:3840x2160 --background-color:"#B4000000" # styled text → image
For full usage, options, OCR setup, operations pipeline, examples, and exit codes, see the canonical reference:
➡️ Command Line (seconv) — full reference